docs: def set_trace(addr=DEFAULT_ADDR, port=DEFAULT_PORT):
      """
      Set a trace point using the remote debugger
      """
      atexit.register(close_port, port)
      try:
          log("Starting a remote python debugger session on %s:%s" % (addr,
                                                                      port))
          open_port(port)
          debugger = Rpdb(addr=addr, port=port)
          debugger.set_trace(sys._getframe().f_back)
      except Exception:
          _error("Cannot start a remote debug session on %s:%s" % (addr,
                                                                   port))